Logout.java

import java.io.IOException;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet("/Logout")

public class Logout extends HttpServlet {
	private static final long serialVersionUID = 1L;

	//logout
	/**
	* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	*/
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	response.getWriter().append("Served at: ").append(request.getContextPath());
	String username = (String)request.getSession().getAttribute("username");
	request.getSession().invalidate();
	request.setAttribute("username", username);
	getServletContext().getRequestDispatcher("/Start.jsp").forward(request, response);
	}

	/**
	* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	*/
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	doGet(request, response);
	}

}